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Patent Searching and Data


Matches 351 - 400 out of 5,304

Document Document Title
WO/2000/061531A1
The invention relates to a method of producing mono-, bi- and/or polyfunctional biaryls of the general formula (I) Ar-Ar' by reacting halogenated aromatics of the general formula (II) Ar-X with boron compounds of the general formula (III...  
WO/2000/029360A1
Disclosed is a method of separating the meta isomer of a halotoluene having general formula (I) from a mixture with at least one other isomer, where X is Cl or Br. About 0.0001 to about 5 wt% of a Friedel-Crafts catalyst is added to the ...  
WO2000010952B1
A decahydronaphthalene derivative represented by general formula (I), a liquid-crystal composition containing the derivative; and a liquid-crystal element containing the composition. The decahydronaphthalene derivative, which is a novel ...  
WO/2000/020364A1
Bromine-containing 1,2-bis(phenyl)difluoromethanes of formula (I)wherein x=1-5, and y=0-5. Also, a method for the preparation of these compounds. The compounds of formula (I) are useful as intermediates in producing compounds exhibiting ...  
WO/2000/020363A1
Bromine-containing 1,2-bis(phenyl) tetrafluoro ethanes of formula (I) wherein x=1-5, and y=0-5. Also, a method for the preparation of these compounds. The compounds of formula (I) are useful as intermediates in producing compounds exhibi...  
WO/2000/012449A1
An allylic compound is reacted with an organozinc compound Zn(R?6¿)¿2? to eliminate a group (the leaving group) from the allylic compound and to add a group from the organozinc compound to it in the presence of a copper salt catalyst a...  
WO/2000/010952A1
A decahydronaphthalene derivative represented by general formula (I), a liquid-crystal composition containing the derivative; and a liquid-crystal element containing the composition. The decahydronaphthalene derivative, which is a novel ...  
WO/2000/009475A1
Amine derivatives represented by general formula (1) or their salts, wherein R?1¿ represents C¿1-4? alkyl; R?2¿ represents (i), or (ii), (iii); R?3¿ represents C¿1-3? alkyl, hydroxylated C¿1-5? alkyl, C¿1-5? acyl, C¿2-5? alkenyl ...  
WO/2000/007968A1
Novel 2-substituted 7-haloindenes and methods for synthesizing such indenes are described. The 2-substituted 7-haloindenes may be coupled with any aryl group to produce a metallocene catalyst intermediate.  
WO1999055718A3
Multifunctional liquid phase carriers (LPCs) and methods of using LPCs for the preparation of biopolymers are provided. The LPCs are highly symmetrical compounds that possess more than two points of attachment for biopolymer synthesis. T...  
WO/1999/058484A1
An azeotrope-like composition comprising a perfluorobutyl methyl ether and a brominated hydrocarbon. The azeotrope-like composition has excellent dissolving ability.  
WO1999031036A3
The invention describes O-derivatives of halogenated diphenyl ether compounds of formula (1), in which R1 and R2 independently of one another are F, Cl or Br; Y is a radical of formula (1a); (1b); (1c); (1d); (1e) or (1f); R3 is C1-C22al...  
WO/1999/055718A2
Multifunctional liquid phase carriers (LPCs) and methods of using LPCs for the preparation of biopolymers are provided. The LPCs are highly symmetrical compounds that possess more than two points of attachment for biopolymer synthesis. T...  
WO/1999/054385A1
A copolymer comprising 10-90 % by weight of groups of Formula (I) and from 10-90 % by weight of groups selected from Formulas (II), (III), and (IV) and mixtures thereof; wherein R?1¿ is independently in each occurrence H, C¿1?-C¿20? h...  
WO/1999/051609A1
The invention relates to a method for producing grignard compounds of formula (I). The invention also relates to compounds of formula (I) in polymer bonded compounds of formula (Ia). The invention further relates to the use of the invent...  
WO/1999/050210A1
The invention relates to vinylene and ethyl compounds of formula (I), wherein R?1¿, R?2¿, A?1¿, Z?1¿, Z?2¿, Z?3¿, m and n have the meanings given in claim 1. The inventive compounds are suitable as components of liquid crystalline ...  
WO/1999/050207A1
The invention concerns a method for preparing 2-chloro-1-cyclohexyl-4-ethynylbenzene from 1-(3-chloro-4-cyclohexylphenyl) either by forming 3-chloro-3-(3-chloro-4-cyclohexylphenyl)propenal, $i(Z), a novel compound, or by the action of a ...  
WO/1999/047479A1
The invention relates to a method for chlorinating ketones which apart from the carbonyl group are inert in relation to triarylphosphine dichlorides, except cyclopropyl methyl ketone. According to said method the ketones are reacted with...  
WO/1999/047474A1
This invention relates to a novel, inventive process for the preparation of biphenyls or aromatic olefins by coupling reactions of the Suzuki coupling and Heck coupling type, using allylpalladium catalysts of the $g(m)-halo(triisopropylp...  
WO/1999/041214A1
A halogenating agent represented by general formula (1) and a process for halogenating a hydroxyl group therewith. In said formula R?1¿ and R?2¿ are the same or different and each represents ethyl, propyl, isopropyl, butyl, isobutyl or...  
WO/1999/040052A1
It has been found possible to separate catalytically-active aminophosphonium catalysts from mixtures composed predominately of aminophosphonium catalyst residue(s) and heavy ends form a halogen exchange reaction conducted in an aprotic s...  
WO/1999/036369A1
Use of a water soluble binder composition for the production of glass or stone wool, characterized in that the binder composition contains one or more compounds with carboxylic acid groups and $g(b)-hydroxyalkyl amide groups.  
WO/1999/036368A1
Compound or salts thereof suitable for use as a binder for mineral fibres, for example glass or stone wool, said compound comprising: a carboxylic acid group, and/or, a $g(b)-hydroxyalkyl amide group.  
WO1999019420A3
A ferroelectric liquid crystal mixture, especially useful for operation in the tau Vmin-mode, comprises a 5-Arylindane derivative of formula (I), wherein Y is CH, CF or N and R<1>(-A<1>-M<1>)a(-A<2>-M<2>)b-, (M<3>-A<3>-)cR<2> are mesogen...  
WO/1999/031036A2
The invention describes O-derivatives of halogenated diphenyl ether compounds of formula (1), in which R¿1? and R¿2? independently of one another are F, Cl or Br; Y is a radical of formula (1a); (1b); (1c); (1d); (1e) or (1f); R¿3? is...  
WO/1999/026950A1
Impure tetra(dihydrocarbylamino)phosphonium halide is contacted with a liquid cyclic ether to dissolve the phosphonium halide and leave at least a portion of the impurities comprising at least quaternary ammonium halide or an amidophosph...  
WO/1999/024385A1
The invention relates to fluorinated phenanthrene derivatives of formula (I), wherein G1 represents -CH=CH- or -CH¿2?CH¿2?-, X represents H or F, Y represents H or F, and R?1¿, M¿1?-A¿1?-R?2¿ represent mesogene radicals. The deriva...  
WO/1999/021924A1
Fluorinated chemical precursors, methods of manufacture, polymer thin films with low dielectric constants, and integrated circuits comprising primarily of sp?2¿C-F and some hyperconjugated sp?3¿C-F bonds are disclosed in this invention...  
WO/1999/021932A1
New starting materials and methods are used to make materials with low dielectric constant through the processes of transport polymerization or chemical vapor deposition. The starting materials and precursors are designed to provide poly...  
WO/1999/021816A1
Liquid-crystal compounds combining an extremely large negative value of permittivity anisotropy with a small value of optical anisotropy; a liquid-crystal composition containing the same; and a liquid-crystal display element formed from ...  
WO/1999/021936A1
A polymer electroluminescent device (1) comprises an electroluminescent layer (7) of a poly(1,4-phenylenevinylene) having aryl-1,4-phenylene units, where the aryl group is a phenyl, naphthyl or biphenylyl group. Using such a poly(1,4-phe...  
WO/1999/021815A1
Liquid-crystalline compounds having a large negative value of permittivity anisotropy and a small value of optical anisotropy; a liquid-crystal composition containing the same; and a liquid-crystal display element formed from the liquid-...  
WO/1999/019420A2
A ferroelectric liquid crystal mixture, especially useful for operation in the $g(t)V¿min?-mode, comprises a 5-Arylindane derivative of formula (I), wherein Y is CH, CF or N and R?1¿(-A?1¿-M?1¿)¿a?(-A?2¿-M?2¿)¿b?-, (M?3¿-A?3¿-)...  
WO/1999/015129A2
Selective inhibitors of the cPLA¿2? enzymes are provided which are of use in controlling a wide variety of inflammatory diseases. The inhibitors of the present invention have general formula (i), where (R?1¿), p, D, Y, Z, R?a¿, R?b¿ ...  
WO/1999/006339A1
The invention concerns a method for preparing substituted benzyl bromides of general formula (I), wherein at least one substituent R?1-5¿ represents an electroattractive group, such as fluorine, chlorine, bromine, C¿1?-C¿4? alkoxycarb...  
WO/1998/056743A1
The invention relates to a continuous method for producing primary or secondary alcohols by reducing the corresponding aldehydes or ketones with a secondary aliphatic alcohol as the hydrogen donor, in the presence of a catalyst. The redu...  
WO/1998/055429A1
A method of fluorinating an organic compound comprising reacting an organic compound with a fluorinating agent characterised in that a perfluorocarbon compound is present in the reaction medium. The perfluorocarbon compound may replace a...  
WO/1998/047862A1
The invention relates to 3-cyano-2,4,5-trifluoro-benzoyl fluoride and intermediate products for the production thereof and a method for the production of 3-cyano-2,4,5-trifluoro-benzoyl fluoride starting from 5-fluoro-1,3-xylol (VIII), w...  
WO/1998/046547A1
A process is disclosed for preparing 2-aryl-substituted indenes by reacting an indene with an arene compound substituted with an halogen atom, preferably a iodine atom, or with an organosulphonate group, said reaction being carried out i...  
WO/1998/046647A1
The invention concerns a novel method for preparing non-toxic resins cross-linkable under radiation in the presence of an initiator system. Said resins are prepared from compositions of organic and/or silicon type comprising monomers, ol...  
WO/1998/042676A1
The invention relates to a process for preparing a compound of formula (I), comprising reacting a bromo-substituted pyridine with an amine of the formula NHR?5�R?6�, reacting the resulting amide with an iodo-halomethyl-substituted co...  
WO/1998/041491A1
Flame retardants comprising oligomeric bromine-containing compounds comprising aryl groups that are connected by aliphatic chains are described. Flame retardant compositions comprising the flame retardants of the present invention and fl...  
WO/1998/040336A1
Novel liquid crystal compounds having a particularly large refractive index anisotropy value and an excellent compatibility with other liquid crystals. The compounds are represented by general formula (1): wherein H�1?, H�2?, H�3?,...  
WO/1998/039287A1
The present invention relates to benzanthrones and benzanthrone derivatives having antiviral properties and to antiviral compositions that include at least one benzanthrone or benzanthrone derivative having antiviral properties. Benzanth...  
WO/1998/035924A1
Novel liquid-crystalline compounds which can impart desirable properties to liquid-crystal compositions mainly for use in the TFT, STN, and TN display systems, in particular liquid-crystalline compounds having excellent compatibility at ...  
WO/1998/033752A1
Novel 2-substituted 7-haloindenes and methods for synthesizing such indenes are described. The 2-substituted 7-haloindenes may be coupled with any aryl group to produce a metallocene catalyst intermediate.  
WO/1998/032722A1
Electrically and chemically stable liquid crystal compounds having a good compatibility with conventional liquid-crystal compounds even at low temperature while maintaining a high voltage retention and a large $g(D)$g(e) and being repres...  
WO/1998/032532A1
A catalyst for halogen-fluorine exchange reactions of aromatic compounds essentially consists of a mixture of one or more compounds (a) and at least one compound (b), (c) and/or (d). (a) is an amidophosphonium salt of formula (I), in whi...  
WO/1998/027036A1
Liquid-crystal compounds represented by general formula (1) and a liquid-crystal composition containing any of the compounds, wherein R?1� represents C�1-15? alkyl; rings A?1�, A?2�, and A?3� each independently represents trans...  
WO/1998/027035A1
Fluorinated phenantrene derivatives of the formula (I), in which G means -CHF-CH�2?-or -CF=CH-; E?1�, E?2�, E?3�, E?4�, E?5�, E?6� are identical or different and mean -CH-, -CF- or -N-; and R?1�(-A?1�-M?1�)�a?(-A?2...  

Matches 351 - 400 out of 5,304